JPH02136645A - Outlet for under floor type air conditioner - Google Patents

Abstract

PURPOSE:To regulate the spiral flow direction of the air that is taken in through guide vanes and flows spirally in order to improve the atmospheric characteristic of a room by making the direction of guide vanes of a spiral inlet variable. CONSTITUTION:Guide vanes 8 are axially supported by upper pins 9 fixed on a cylindrical part 5A under a ring 6 and lower pin 10 fixed on a bottom plate 5. When a movable ring 7 is turned in the circumferential direction, guide pins 11 rotate all together, and the guide vanes 8 are turned around the upper and lower pins 9 and 10 by the guide pins 11 so that all the guide vanes 8 are aligned at an angle theta. When the direction of the guide vanes approaches the tangential line of the circumference of the spiral air inlet 4, the spiral flow force becomes strong and the straight flowing force is weakened because the air flows intersecting the tangential line at an acute angle. When the direction of the guide vanes 8 leaves from the tangential line of the circumference of the spiral air inlet 4 and approaches the direction of the center of the circle, the air flows towards the center of the circle, so that the spiral flow force is weakened and the straight flowing force becomes strong.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an underfloor air conditioning outlet that supplies hot or cold air to a room for air conditioning.

[Prior Art] Recently, in office buildings, etc., a space is formed under the floor, hot or cold air is supplied to this space, and this hot or cold air is directed to the floor surface using, for example, a static pressure difference. Underfloor air conditioning is performed by blowing air into the room from the formed air outlet to condition the room.

When using an underfloor air conditioning method that utilizes this static pressure difference to supply hot or cold air into a room, in order to maintain a uniform temperature in the room, the diffusivity of the hot or cold air that blows into the room from the outlet must be adjusted. requested. For example, FIG.

The underfloor air conditioning outlet shown in FIG. 8 is used and is known.

In the figure, reference numeral 31 indicates a floor panel that constitutes the upper surface of the double floor 31A on which an air conditioner (not shown) is placed.

A floor slab (not shown) is arranged below this floor panel 31, and the space between the floor panel 31 and the floor slab is used as a chamber. Underfloor air-conditioning outlet 33 of air-conditioning outlet 32 is arranged. This blow-off part 33 has an opening 34A formed concentrically and facing into the room;
34B, and a cylindrical part 35 on which the cylindrical lid part 34 can be placed.

An air inflow swirling section 36 is provided below the blowing section 33 . The air inflow swirling section 36 has a large number of guides R37 arranged like a rotor of a sirocco fan, allows air to flow in from the side in a tangential direction, and the space inside the guide vane 37 communicates with the openings 34A and 34B of the blowout section 33. ing.

[Problem to be solved by the invention]

However, in the conventional underfloor air conditioning outlet 32, the swirling strength of the blown airflow is kept constant, and although the diffusivity of the airflow can be improved, the strength cannot be controlled. Therefore, when the conditions are completely different, such as when blowing hot air in winter, which requires strong diffusivity, and when blowing cold air, which requires weak diffusivity in summer, fine control of the degree of dispersion of the blowing airflow is not possible, and indoor environmental performance is affected. It was not possible to achieve sufficient improvement.

The present invention has been made in order to solve the above-mentioned problems, and its purpose is to provide an underfloor air conditioning system that can fully improve indoor environmental performance by controlling the degree of diffusion of blown airflow. The purpose is to provide an air outlet for use.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides an air inflow swirling section in which a large number of guide vanes are arranged in the shape of a rotor of a sirocco fan and air flows in between the guide vanes; In the underfloor air conditioning outlet, which is provided above the air inflow swirling part, has an opening facing into the room, and has an outlet that communicates with the space within the guide vane. , the direction of each guide vane of the air inflow swirling section is configured to be variable.

[Function] In the present invention, air is taken into the space within the guide vanes from between each guide vane, but if the direction of each guide vane is made to approach the tangential direction of the circumference of the air inflow swirling part, the air will be taken in from between the guide vanes. , it flows in at an angle that cuts the tangent at a small angle, and the turning force is strong.

On the other hand, if the direction of each guide vane is changed and the direction of each guide vane is directed away from the tangential direction of the circumference of the air inflow swirl section and toward the center point of the circumference, the air will be directed toward the center of the circle of the air inflow swirl section. It is flowing towards the vicinity and the turning force is weakening.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

1 to 6 show the contents of an underfloor air conditioning outlet according to an embodiment of the present invention.

In FIG. 6, reference numeral IA indicates a floor panel constituting the upper surface of the double floor IB on which an air conditioner (not shown) is placed. A floor slab IC is arranged below this floor panel IA.

An underfloor air conditioning outlet 2 is installed in the attachment hole ID formed in the floor panel IA.

The structure of this underfloor air conditioning outlet 2 is shown in FIGS. 1 to 5.

As shown in the figure, the underfloor air conditioning outlet 2 includes a blowout part 3 and an air inflow swirl part 4 provided below the blowout part 3.
, a bottom portion 5, and a cylindrical portion 5A.

The blowing part 3 is a connecting member 6A that intersects in a cross shape.

6A is attached, and a movable ring 7 that rotates with respect to the fixed ring 6. The fixing ring 6 has circumferential opening slits 6B, 6C, and 6D concentrically formed, and between the circumferential opening slits 6D,
A movable ring 7 is arranged.

The air inflow swirling section 4 has a large number of guide vanes 8 arranged like a rotor of a sirocco fan, and each guide vane 8 has an angle θ with respect to the tangent. Air is caused to flow into the space S inside each guide vane 8 from between them.

The space S in the guide vane 8 is the circumferential opening slit 6 of the blowout part 3.
It communicates with B, 6C, and 6D.

The guide vane 8 includes an upper pin 9 fixed to the cylindrical part 5A at the lower part of the ring body 6, and a lower pin 10 fixed to the bottom part 5.
It is pivoted on. A hole 8A is bored in the upper surface of the guide blade 8 along its longitudinal direction. The movable ring 7 is provided with the same number of guide pins 11 as the number of guide vanes 8 along its circumference, and each guide pin 11 is loosely fitted into the hole 8A of each guide vane 8. .

When the movable ring 7 is rotated in the circumferential direction, each guide pin 11
are rotated in unison, and accordingly, each guide vane 8 is rotated by the guide pin 11 around the upper pin 9 and lower pin 10, and the installation angle θ of each guide vane 8 is aligned at the same angle. Change.

Thus, the air sent from the air conditioner flows through the double floor IB, and the air is taken into the space S within the guide vanes from between the guide vanes 8.

For example, during heating in winter, as shown by the solid line in FIG. ), the air flows in at an angle that cuts the tangential line at a small angle, creating a strong turning force and weakening straightness.

On the other hand, during summer cooling, the direction of each guide vane 8 is changed,
As shown by the two-dot chain line in FIG. 5, when the direction of each guide vane 8 is moved away from the tangential direction of the circumference of the air inflow swirling section 4 and closer to the center point of the circumference, the air flows near the center of the circle. It flows towards the other direction, the turning power is weak, and the straightness is strong.

According to the above configuration, by configuring the direction of each guide vane 8 of the air inflow swirling section 4 to be variable, the direction of the swirling flow of the air taken in between the guide vanes 8 and swirling is controlled, and the air is blown out. By changing the swirling strength of the blown airflow blown into the room R from 6B, 6C, and 6D (circumferential loss slips in section 3), for example, even when the temperature difference conditions of the blown air during heating and cooling are different, the blown air It is possible to easily appropriately control the airflow distribution and temperature distribution of the room, and as a result, it is possible to sufficiently improve the indoor environmental performance.

In this embodiment, by rotating the movable ring 7 in the circumferential direction, the orientation of each guide vane 8 is changed while keeping the same angle. Changing the angle is not limited to this structure, and it is not necessarily necessary to change the orientation of each guide vane 8 at the same angle.

〔Effect of the invention〕

As described above, according to the present invention, by configuring the direction of each guide vane of the air inflow swirl section to be variable, the swirling flow direction of the air taken in between the guide vanes and swirling is controlled. By changing the swirling strength of the airflow blown into the room from the opening, it is easy to appropriately control the airflow distribution and temperature distribution of the blown air, even when the temperature difference between the blown air during heating and cooling is different, for example. This results in the effect that indoor environmental performance can be sufficiently improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an underfloor air conditioning outlet according to an embodiment of the present invention. FIG. 2 is a plan view of the blowing section of FIG. 1. 3 and 4 are an explanatory diagram and a perspective view showing the operation of the guide vane in FIG. 1. FIG. 5 is an explanatory cross-sectional view of the air inlet swirling section of FIG. 1. FIG. 6 is a cross-sectional explanatory view showing the installation state of the underfloor air conditioning outlet of this embodiment. FIG. 7 is a partial sectional view of a conventional underfloor air conditioning outlet. FIG. 8 is a sectional view taken along line BB in FIG. 7. [Description of symbols of main parts] 2... Underfloor - Air conditioning outlet 3... Outlet part 4... Air inflow swirling parts 6B, 6C, 6D... Circumferential opening slit 8...・Guide wing. Figure Figure Figure

Claims (1)

[Claims] (1) An air inflow swirl section in which a large number of guide vanes are arranged like the rotor of a sirocco fan and air flows in between the guide vanes, and an opening provided above the air inflow swirl section and facing into the room. In the underfloor air-conditioning outlet, the underfloor air-conditioning outlet has a blow-off portion formed in the air and the opening communicates with the space within the guide vane, wherein the direction of each guide vane of the air inflow swirling portion is configured to be variable. Features an underfloor air conditioning outlet.